JP4925601B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP4925601B2 JP4925601B2 JP2005119495A JP2005119495A JP4925601B2 JP 4925601 B2 JP4925601 B2 JP 4925601B2 JP 2005119495 A JP2005119495 A JP 2005119495A JP 2005119495 A JP2005119495 A JP 2005119495A JP 4925601 B2 JP4925601 B2 JP 4925601B2
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- tanx
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- gate electrode
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- 239000004065 semiconductor Substances 0.000 title claims description 57
- 229910004156 TaNx Inorganic materials 0.000 claims description 68
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 64
- 229910052757 nitrogen Inorganic materials 0.000 claims description 32
- 239000000758 substrate Substances 0.000 claims description 28
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 9
- 238000004050 hot filament vapor deposition Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910008807 WSiN Inorganic materials 0.000 description 20
- 230000004888 barrier function Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- -1 GaAs compound Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/47—Schottky barrier electrodes
- H01L29/475—Schottky barrier electrodes on AIII-BV compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28575—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising AIIIBV compounds
- H01L21/28581—Deposition of Schottky electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28575—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising AIIIBV compounds
- H01L21/28587—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising AIIIBV compounds characterised by the sectional shape, e.g. T, inverted T
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/47—Schottky barrier electrodes
Description
図1は、本発明の実施の形態1に係る半導体装置(高出力FET)の構造を示す断面図である。高出力FETは、チャネル構造の相違によってMESFET、HFET、HEMT等に分類されるが、本発明はいずれの構造にも適用可能である。図1を参照して、基板100は、ヘテロ接合により積層された、AlGaAs層1、GaAs層2、及びn+−GaAs層3を有している。基板100は、GaAs基板であってもよいし、エピタキシャル成長等によってSi基板(図示しない)上にGaAs系の化合物半導体層が積層された基板であってもよい。つまり、GaAsを主材料とする化合物半導体層を有する基板であればよい。GaAs層2は、AlGaAs層1上に形成されている。ソース領域又はドレイン領域として機能するn+−GaAs層3は、GaAs層2上に形成されている。n+−GaAs層3上には、ソース電極4及びドレイン電極5が形成されている。
図4は、本発明の実施の形態2に係る半導体装置の構造を示す断面図である。図1に示した上記実施の形態1に係る半導体装置を基礎として、ゲート電極8と基板100との界面に、Ti膜20が追加形成されている。具体的に、基板100には、AlGaAs層1によって規定される底面と、GaAs層2によって規定される側面とを有する凹部が形成されており、この凹部の底面及び側面に接触してTi膜20が形成されている。本実施の形態2において、ゲート電極8はTi膜20上に形成されている。
図5は、本発明の実施の形態3に係る半導体装置の構造を示す断面図である。図1に示した上記実施の形態1に係る半導体装置を基礎として、ゲート電極8及び基板100の各露出表面を覆って、シリコン窒化膜30が追加形成されている。シリコン窒化膜30は、触媒CVD法(Cat−CVD法)によって形成されており、耐湿性に優れている。触媒CVD法によってシリコン窒化膜30を形成すると、基板100に与えるダメージが少なく、結果として、緻密な絶縁膜を形成できるために耐湿性がより向上する。
図6は、本発明の実施の形態1の変形例に係る半導体装置の構造を示す断面図である。図1に示したTaNx層6が、第1のTaNx層6aと第2のTaNx層6bとに分割されている。第1のTaNx層6aは基板100に接触しており、第2のTaNx層6bは第1のTaNx層6a上に形成されている。第1のTaNx層6aの窒素含有率xの範囲は0<x<0.2であり、第2のTaNx層6bの窒素含有率xの範囲は0.4<x<0.8である。一例として、第1のTaNx層6aの窒素含有率xは0.1であり、第2のTaNx層6bの窒素含有率xは0.5である。
Claims (8)
- GaAsを主材料とする化合物半導体層を有する基板と、
前記化合物半導体層上に形成された電極と
を備え、
前記電極は、前記化合物半導体層に接触するTaNx層(窒素含有率0<x<0.8)を有し、
前記TaNx層は、
前記化合物半導体層に接触し、窒素含有率が第1の値である第1のTaNx層と、
前記第1のTaNx層上に形成され、窒素含有率が前記第1の値よりも高い第2の値である第2のTaNx層と
を有する、半導体装置。 - 前記電極は、オーミック接合で前記化合物半導体層に接触する電極である、請求項1に記載の半導体装置。
- 前記電極は、ショットキー接合で前記化合物半導体層に接触する電極である、請求項1に記載の半導体装置。
- 前記電極は、前記TaNx層として、TaNx層(x≦0.5)を有する、請求項3に記載の半導体装置。
- 前記電極と前記化合物半導体層との界面に形成されたTi膜又はTa膜をさらに備える、請求項3または請求項4に記載の半導体装置。
- 前記電極は、
前記TaNx層上に形成された、前記TaNx層よりも低抵抗の金属層をさらに有する、請求項1〜5のいずれか一つに記載の半導体装置。 - 触媒CVD法によって前記電極の露出表面を覆って形成されたシリコン窒化膜をさらに備える、請求項6に記載の半導体装置。
- 触媒CVD法によって前記化合物半導体層の露出表面を覆って形成されたシリコン窒化膜をさらに備える、請求項1〜7のいずれか一つに記載の半導体装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005119495A JP4925601B2 (ja) | 2005-04-18 | 2005-04-18 | 半導体装置 |
US11/374,141 US20060231871A1 (en) | 2005-04-18 | 2006-03-14 | Semiconductor device |
CNB2006100735412A CN100440533C (zh) | 2005-04-18 | 2006-04-10 | 半导体装置 |
KR1020060033406A KR100731800B1 (ko) | 2005-04-18 | 2006-04-13 | 반도체 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005119495A JP4925601B2 (ja) | 2005-04-18 | 2005-04-18 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006302999A JP2006302999A (ja) | 2006-11-02 |
JP4925601B2 true JP4925601B2 (ja) | 2012-05-09 |
Family
ID=37107677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005119495A Active JP4925601B2 (ja) | 2005-04-18 | 2005-04-18 | 半導体装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060231871A1 (ja) |
JP (1) | JP4925601B2 (ja) |
KR (1) | KR100731800B1 (ja) |
CN (1) | CN100440533C (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5358893B2 (ja) * | 2007-04-03 | 2013-12-04 | 三菱電機株式会社 | トランジスタ |
JP2008300557A (ja) * | 2007-05-30 | 2008-12-11 | Mitsubishi Electric Corp | 半導体装置 |
JP5324076B2 (ja) * | 2007-11-21 | 2013-10-23 | シャープ株式会社 | 窒化物半導体用ショットキー電極および窒化物半導体装置 |
US8860150B2 (en) * | 2009-12-10 | 2014-10-14 | United Microelectronics Corp. | Metal gate structure |
US8847232B2 (en) * | 2011-01-07 | 2014-09-30 | Eastman Kodak Company | Transistor including reduced channel length |
US8847226B2 (en) | 2011-01-07 | 2014-09-30 | Eastman Kodak Company | Transistor including multiple reentrant profiles |
JP2014072391A (ja) * | 2012-09-28 | 2014-04-21 | Fujitsu Ltd | 化合物半導体装置及びその製造方法 |
JP2014072388A (ja) * | 2012-09-28 | 2014-04-21 | Fujitsu Ltd | 化合物半導体装置及びその製造方法 |
DE102015101966B4 (de) | 2015-02-11 | 2021-07-08 | Infineon Technologies Austria Ag | Verfahren zum Herstellen eines Halbleiterbauelements mit Schottkykontakt und Halbleiterbauelement |
CN113793866B (zh) * | 2021-11-16 | 2022-03-11 | 深圳市时代速信科技有限公司 | 一种空气场板结构及其制作方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61117868A (ja) * | 1984-11-14 | 1986-06-05 | Toshiba Corp | 半導体装置及びその製造方法 |
JPH0783034B2 (ja) * | 1986-03-29 | 1995-09-06 | 株式会社東芝 | 半導体装置 |
JPS63132475A (ja) * | 1986-11-25 | 1988-06-04 | Nippon Telegr & Teleph Corp <Ntt> | 薄膜およびその製造方法 |
US4935805A (en) * | 1988-05-16 | 1990-06-19 | Eaton Corporation | T-type undercut electrical contact on a semiconductor substrate |
JPH03211880A (ja) * | 1990-01-17 | 1991-09-17 | Toshiba Corp | ショットキー接合の形成方法 |
JPH053168A (ja) * | 1991-06-25 | 1993-01-08 | Toshiba Corp | 半導体電極の形成方法 |
TW297158B (ja) * | 1994-05-27 | 1997-02-01 | Hitachi Ltd | |
JP2000049116A (ja) * | 1998-07-30 | 2000-02-18 | Toshiba Corp | 半導体装置及びその製造方法 |
US6337151B1 (en) * | 1999-08-18 | 2002-01-08 | International Business Machines Corporation | Graded composition diffusion barriers for chip wiring applications |
JP2001274175A (ja) * | 2000-03-27 | 2001-10-05 | Toshiba Corp | 半導体装置の製造方法 |
JP3846150B2 (ja) * | 2000-03-27 | 2006-11-15 | 豊田合成株式会社 | Iii族窒化物系化合物半導体素子および電極形成方法 |
JP2002043418A (ja) * | 2000-07-24 | 2002-02-08 | Nec Corp | 半導体装置およびその製造方法 |
US6740591B1 (en) * | 2000-11-16 | 2004-05-25 | Intel Corporation | Slurry and method for chemical mechanical polishing of copper |
US6537901B2 (en) * | 2000-12-29 | 2003-03-25 | Hynix Semiconductor Inc. | Method of manufacturing a transistor in a semiconductor device |
JP2003273129A (ja) * | 2002-03-14 | 2003-09-26 | Fujitsu Quantum Devices Ltd | 半導体装置及びその製造方法 |
US6756325B2 (en) | 2002-05-07 | 2004-06-29 | Agilent Technologies, Inc. | Method for producing a long wavelength indium gallium arsenide nitride(InGaAsN) active region |
JP2005340417A (ja) * | 2004-05-26 | 2005-12-08 | Mitsubishi Electric Corp | ヘテロ接合電界効果型半導体装置 |
-
2005
- 2005-04-18 JP JP2005119495A patent/JP4925601B2/ja active Active
-
2006
- 2006-03-14 US US11/374,141 patent/US20060231871A1/en not_active Abandoned
- 2006-04-10 CN CNB2006100735412A patent/CN100440533C/zh active Active
- 2006-04-13 KR KR1020060033406A patent/KR100731800B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR100731800B1 (ko) | 2007-06-25 |
JP2006302999A (ja) | 2006-11-02 |
CN1855530A (zh) | 2006-11-01 |
CN100440533C (zh) | 2008-12-03 |
US20060231871A1 (en) | 2006-10-19 |
KR20060109829A (ko) | 2006-10-23 |
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